Patent US2240064A successfully refreshed from Google Patents.
US2240064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alloy for metal to glass seals
Assignee: Wilbur B Driver Co
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Filing: 1941-02-06
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Granted: 1941-04-29
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Expires: 1961-02-06
Abstract
No abstract record available.
Inventors
- 👤 Victor O Allen
- 👤 Jr Charles P Marsden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:41
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/08; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12597
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1944-04-28 | 1944-10-28 | 1945-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1948-04-28 | 1948-10-28 | 1949-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1952-04-28 | 1952-10-28 | 1953-04-29 | $7700.00 | Window Closed / Lapsed |